Index of Commodity Prices May 2026

Preliminary estimates for May indicate that the index increased by 1.3 per cent (on a monthly average basis) in SDR terms, after decreasing by 0.3 per cent in April. The rural, non-rural and base metals subindices increased in the month. In Australian dollar terms, the index decreased by 0.1 per cent in May.

Over the past year, the index has increased by 16.8 per cent in SDR terms. Increases in the price of lithium, coking coal and rural commodity prices have more than offset declines in iron ore and gold. The index has increased by 6.1 per cent in Australian dollar terms.

Consistent with previous releases, preliminary estimates for iron ore, coking coal, thermal coal and LNG export prices are being used for the most recent months, based on market information. Using spot prices for the bulk commodities index, the index increased by 1.0 per cent in May in SDR terms, but remains 18.1 per cent higher over the past year.

For further details regarding the construction of the index, please refer to ‘Changes to the RBA Index of Commodity Prices: 2013’ in the March 2013 issue of the Bulletin and ‘Weights for the Index of Commodity Prices’ (April 2026).

Details are in the attached table and graph.